added plenty of nations, with their more or less historical starting location

used only, or almost only, nations older of at least one millenary. There are a few exceptions but it is just because the original peoples these exceptions are coming from are not available

modified a bit the trees/hills/icy areas in order to look more realistic (amazonia with a small jungle seemed strange, one could also wonder why vikings have gone pirates if there was no ice on the north of europe, etc) and also to balance starting location (harsh on the area where a civilisation is almost alone)

Plus, I also tuned the game options:

No magic reconstruction of a palace is the capitol city was destroyed

Frontiers

Race to space

How to use it:

you must put earth-160x90-v2.m2.sav.gz in you freeciv scenarii directory (here /usr/share/freeciv/scenario)